Combination jack and concrete form



Oct. 19, 1948. M. SALAS 2,451,777

COMBINATION JACK AND CONCRETE FORM Filed Sept. 6, 1946 JFIJL;

Patented Oct. 19, 1948 OFFICE COMBINATION JACK AND CONCRETE Miguel Salas, Chihuahua, Mexico Application September 6, 1946, Serial No. 695,197

3 Claims. (01. 25-131) The present invention relates to hydraulic jacks and is more particularly concerned with a Jack to be used in the repair and replacement of defective foundations, footings and walls.

The primary object of the invention is to provide a sectional device ofv the character referred to sections which can be removed after the repair or replacement work.

Another object of the invention is to provide a device of the character referred to whereby the repair material is emplaced under pressure to lift the defective building part to proper level, and at the same time to serve as a form.

With the foregoing and other objects and advantages in view the invention consists of the novel construction and arrangement of parts hereinafter described and claimed.

In the accompanying drawings illustrating the preferred embodiment of the invention,

Figure 1 is a top plan view of the device;

Figure 2 is a side elevation thereof;

Figure 3 is a, vertical longitudinal section of the device.

Like numerals, as used in the description and drawings, designate the same structural parts.

ill designates the base section of the jack and form. This comprises a pedestal, preferably rectangular in shape to provide a stable footing, and a perpendicular, cylindrical block ll, integral therewith. These parts may be constructed of any suitable material, preferably concrete, and prefabricated with holes l2 in block l3 for reception of tie rods projecting from the top of block II, as hereinafter explained.

A spaced cylindrical block l3, to be vertically aligned with the block I I and conforming thereto, is provided to serve as the upper piston of the jack when both blocks are removably enclosed by the annular casing member M. This block is also reinforced as above explained.

Member It consists of semi-circular sleeve elements provided with diametrically disposed longitudinal flanges l5 designed to be bolted together by a, plurality of screw bolts Hi. This construction readily permits removal of the cylindrical form thus provided when positioned on blocks H and I3 to enclose the space therebetween.

One of said semi-circular elements is provided with a short conduit pipe I! mounted in a, port l8 in the side of such element. This pipe is designed to serve as a conduit to supply concrete in a fluid state to the space between said blocks, and is provided with a suitable check-valve l9 to prevent return of the fluid concrete when it is being pumped in under pressure.

The pumping unit to force the fluid concrete through said conduit under pressure, may be of a conventional type.

In both blocks II and I3 metal tie rods 2| are anchored, with exposed portions designed to project through the space between the blocks. The holes l2 in block l3 are positioned to receive the rods projecting from block ll. Before concrete is injected into said space a coil of reinforcing spring metal 22 is placed around the exposed rods 2|, thus reinforcing the concrete between the blocks.

In operation the jack is set up under the wall or other building part to be repaired as shown in Figure 2 and is connected to the concrete supply unit. Then the fluid concrete 20 is forced under pressure through conduit l'land into the space between blocks H and I3, thus serving as a piston cylinder to further space them apart until the wall has been lifted to the desired level. The compressor is then shut down and the concrete within the form allowed to set, after which the semi-circular elements M are unbolted and taken off the repair work, leaving blocks H and I 3 which are now integral parts of the wall.

As diflerent embodiments may be made of this invention concept and modifications may be made in the embodiment hereinbefore shown and described, it will be understood that the matter herein is to be interpreted as illustrative merely,

and not in a limiting sense.

What I claim is:

1. A' concrete form and hydraulic jack, comprising two spaced cylindrical blocks of concrete or similar. material, a removable cylindrical sleeve for reception of said blocks in spaced alignment, a conduit to admit fluid concrete under pressure to the space between said blocks, a valve to prevent the retum of the fluid concrete when being supplied to said space, means to re-enforce the concrete blocks and the poured concrete, and means to tie the sections of the completed column together.

2. A concrete form and hydraulic jack, comprising two spaced cylindrical blocks of concrete or similar material, a removable cylindrical sleeve for the reception of said blocks in spaced alignment, a conduit to admit fluid concrete under pressure to the space between said blocks, 'a valve to prevent the return of the fluid concrete when being supplied to said space, and means to reenforce the concrete blocks and the poured concrete.

3. A concrete form and hydraulic Jack, comprising two spaced, cylindrical blocks of concrete or similar material, a removable cylindrical sleeve for reception of said blocks in spaced alignment, said sleeve consisting of a plurality of segments provided with abutting longitudinal flanges, threaded bolts to fasten said flanges together, a, conduit in one of said segments to admit fluid concrete under pressure to the space between said blocks, a, valve to prevent the return of the fluid concrete when being supplied to said space, means to reinforce the concrete blocks and the poured concrete, and means to tie the sections of the completed column together.

MIGUEL SALAS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

